/*
* Copyright (c) 2022 Shenzhen Kaihong Digital Industry Development Co., Ltd. 
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

#ifndef SINGLE_INSTANCE_H
#define SINGLE_INSTANCE_H

#include "utils/infer_macros.h"

namespace OHOS {
namespace AI_STD {
#define DECLARE_SINGLE_INSTANCE_BASE(className)       \
public:                                               \
    static className& GetInstance();                  \
FORBID_COPY_AND_ASSIGN(className);

#define DECLARE_SINGLE_INSTANCE(className)            \
    DECLARE_SINGLE_INSTANCE_BASE(className)           \
private:                                              \
FORBID_CREATE_BY_SELF(className);

#define IMPLEMENT_SINGLE_INSTANCE(className)          \
className& className::GetInstance()                   \
{                                                     \
    static className instance;                        \
    return instance;                                  \
}
} // namespace AI_STD
} // namespace OHOS
#endif // SINGLE_INSTANCE_H
